Types of Nucleophiles

Q.

What are ambident nucleophiles ? Explain with an example.

Q. Which of the following is not an ambident nucleophile?

1. $O{H}^{-}$
2. $N{O}_2^{-}$
3. $C{N}^{-}$
4. $SC{N}^{-}$

Q. Which of the following is not a ambident nucleophile?

1. $C{N}^{-}$
2. $O{H}^{-}$
3. $N{O}_2^{-}$
4. All of the above.

Q. Which of the following is the strongest nucleophile?

1. $Et{O}^{⊝}$
2. $\stackrel{⊝}{C}N$
3. $\stackrel{⊝}{O}H$
4. $I^{⊝}$

Q. Which of the following is not a nucleophile :

1. $C{H}_3{O}^{-}$
2. $H_{2}O$
3. $C{H}_3-OC{H}_3$
4. $C{H}_3-\underset{H}{\underset{|}{\stackrel{+}{O}}}-H$

Q.

What is the decreasing order of strengths of the following bases?
$\stackrel{\ominus }{OH},N{H}_2^{\ominus },H-C\equiv C^{\ominus },andC{H}_3-C{H}_2^{\ominus }$

1. $C{H}_3\stackrel{\ominus }{C{H}_2}>HC\equiv C^{\ominus }>\stackrel{\ominus }{N{H}_2}>O{H}^{\ominus }$
2. $C{H}_3\stackrel{\ominus }{C{H}_2}>\stackrel{\ominus }{N{H}_2}>HC\equiv C^{\ominus }>O{H}^{\ominus }$
3. $\stackrel{\ominus }{N{H}_2}>C{H}_3\stackrel{\ominus }{C{H}_2}>HC\equiv C^{\ominus }>O{H}^{\ominus }$
4. $O{H}^{\ominus }>C{H}_3\stackrel{\ominus }{C{H}_2}>\stackrel{\ominus }{N{H}_2}>HC\equiv C^{\ominus }$

Q. Which of the following is not a ambident nucleophile?

1. $C{N}^{-}$
2. $O{H}^{-}$
3. $N{O}_2^{-}$
4. All of the above.

Q. The decreasing basic order of the following is:
$i.\stackrel{\ominus }{{CH}_3}$ $ii.\stackrel{\ominus }{N}{H}_2$ $iii.\stackrel{\ominus }{O}H$ $iv.F^{\ominus }$

1. $\left(i\right)>\left(ii\right)>\left(iii\right)>\left(iv\right)$
2. $\left(ii\right)>\left(i\right)>\left(iii\right)>\left(iv\right)$
3. $\left(iv\right)>\left(iii\right)>\left(ii\right)>\left(i\right)$
4. $\left(ii\right)>\left(i\right)>\left(iv\right)>\left(iii\right)$

Q. Increasing basic character: $Mg{\left(OH\right)}_2<LiOH<NaOH<KOH$
if true enter 1, else enter 0.

1. 1

Q. Nucleophilic strength of $H_{2}O>O{H}^{-}$.

Q. In which of the following compounds electron withdrawing group is not present?

1. 
2. 
3. 
4. 

Q. Which of the following has the highest normality?

1. $\text{1M}{\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}$
2. $\text{1M}{\text{H}}_{\text{3}}{\text{PO}}_{\text{3}}$
3. $\text{1M}{\text{H}}_{\text{3}}{\text{PO}}_{\text{4}}$
4. $\text{1M}{\text{HNO}}_{\text{3}}$

Q. Which of the following have +M effect ($\overline{e}$-donating mesomeric effect) ?

1. $-N{O}_2$
2. $-N{H}_2$
3. $-COOH$
4. $-SR$

Q. In which of the following compounds electron withdrawing group is not present?

1. 
2. 
3. 
4. 

Q.

What is the decreasing order of strengths of the following bases?
$\stackrel{\ominus }{OH},N{H}_2^{\ominus },H-C\equiv C^{\ominus },andC{H}_3-C{H}_2^{\ominus }$

1. $C{H}_3\stackrel{\ominus }{C{H}_2}>\stackrel{\ominus }{N{H}_2}>HC\equiv C^{\ominus }>O{H}^{\ominus }$
2. $\stackrel{\ominus }{N{H}_2}>C{H}_3\stackrel{\ominus }{C{H}_2}>HC\equiv C^{\ominus }>O{H}^{\ominus }$
3. $O{H}^{\ominus }>C{H}_3\stackrel{\ominus }{C{H}_2}>\stackrel{\ominus }{N{H}_2}>HC\equiv C^{\ominus }$
4. $C{H}_3\stackrel{\ominus }{C{H}_2}>HC\equiv C^{\ominus }>\stackrel{\ominus }{N{H}_2}>O{H}^{\ominus }$

Q. The decreasing basic order of the following is:
$i.\stackrel{\ominus }{{CH}_3}$ $ii.\stackrel{\ominus }{OH}$
$iii.{CH}_{3}CO{O}^{\ominus }$ $iv.H_{2}O$

1. $\left(iv\right)>\left(iii\right)>\left(ii\right)>\left(i\right)$
2. $\left(i\right)>\left(ii\right)>\left(iii\right)>\left(iv\right)$
3. $\left(iii\right)>\left(i\right)>\left(ii\right)>\left(iv\right)$
4. $\left(iv\right)>\left(ii\right)>\left(i\right)>\left(iii\right)$

Q. Which of the following is not a nucleophile?

1. $C{N}^{-}$
2. $N{H}_3$
3. $B{F}_3$
4. $O{H}^{-}$

Q. The decreasing basic order of the following is:
$i.\stackrel{\ominus }{CN}$ $ii.\stackrel{\ominus }{OH}$ $iii.\stackrel{\ominus }{O}Me$ $iv.\stackrel{\ominus }{{CH}_3}$ $v.H^{\ominus }$

1. $\left(iv\right)>\left(v\right)>\left(ii\right)>\left(iii\right)>\left(i\right)$
2. $\left(v\right)>\left(iv\right)>\left(iii\right)>\left(ii\right)>\left(i\right)$
3. $\left(i\right)>\left(ii\right)>\left(iii\right)>\left(iv\right)>\left(v\right)$
4. $\left(i\right)>\left(ii\right)>\left(iii\right)>\left(v\right)>\left(iv\right)$